Calling device



Dec., 30,1924.

C. D. Rael-IARD CALLING DEVICE 'Filed Deo. 14, 1920 Y 'lill/1111 Patented Dec. 30, 1924.

CHARLES D. RICHARD, QF NEW BRIGHTON, N EW rs voim:)c1-E5.; l

Tmc COMPANY, INCORPORATED, on Nnw YORK, N. Y., A CORPORATION orNnwv YO'RK.

CALLING DEVICE.

Application filed December 14, 1920. Serial, No. 430,681.

To all whom t may concern.'

Be it known that I, CHARLES D. RiCHARD, a citizen of France, residing at New Brighton, Staten Island, i-n the county of Richmond, State of New York, have invented certain new and useful Improvements in Calling Devices, of which the following is a full, clear, concise, and exact description.

This invention relates; to a calling device by which separate groups of impulses may be transmitted.

An object of this invention is to produce a cheap, eiiicent, compact calling device or impulse sender of the dial type used with automatic telephone systems which will transmit the calling impulses in uniform cadence and which cannot be speeded up in its operation by the manipulator.

This object is accomplished by providing` members on the finger wheel and the impulse transmitting mechanism which engage on the forward movement of the wheel but are disengaged if the return movement of the finger wheel is accelerated and the providing of a dog which locks the finger wheel in its normal position until it is released by one of the members carried by the impulse transmitting mechanism when the mechanism returns to its normal position.

The invention will be more clearly understood by reference to the following detailed specifications and accompanying drawings.

Fig. 1 is a cross section of the device.

Fig. 2 is a top plan view showing the members in their normal positions.

Fig. 3 is a-top plan view showing the v members after the forward movement and the finger wheel on its return to normal in advance of the impulse transmitting mechanism.

A casing 1 has any well-known impulse transmitting mechanism, such for example as shown in Patent No. 1,096,841 to W. Kaisling granted May 19, 1914:, mounted therein on a shaft 16. The impulse transmitting mechanism is rotated by a spring 17 and the speed is controlled by a governor, not shown. Carried by the impulse transmitting mechanism is a disc 2 which has a projection 3 on its periphery and a pawl l pivoted to it at 6. The pawl 4 is controlled by a spring 5. Finger wheel 7 has a cupshaped disc 8 attached thereto and is rotatably mounted on the shaft 16 of the impulse transmitting mechanism.

shaped disc 8 has a projection A projection 10 on the casing 1 a stop. A dog 11 is pivoted at 12 tothe casing l and held in its position by spring Thel cup- 13 which is attached to the casing at 14. j

a projection of lwheel 7 is. helda-re' locked ltogether during the forward' movement by means of projections 3 and 9 and the pawl 4- which engages with slot 15. When the propelling force is removed from the finger wheel 7 on the completion of its movement, it is carried back to normal by spring 17 which is controlled by a governor, not shown. If the finger wheel is accelerated on its return movement, it is disengaged from disc 2 since projection 9 is removed from projection 3 and pawl 4 is forced out of slot 15. When finger wheel 7 reaches its normal position, it is locked there by dog 11 engaging with projection 9. On the return to normal of the disc 2 which is carried by the impulse transmitting mechanism, projection 3 engages with dog 11 and forces it back thus releasing finger wheel 7 which may be moved forward again. Thus it is seen that the acceleration of the return rotation of the finger wheel does not disturb the operation of the impulse transmitting mechanism.

What is claimed is:

1. In a calling device 'an electrical impulse transmitting mechanism, a rotatable finger wheel for setting said mechanism, said wheel being' returnable to normal during and prior to the completion of the operation of said mechanism, means for locking said'finger wheel in its normal position, and means for releasing said finger wheel when said transmitting mechanism has completed its operation.

2. In a calling device an electrical impulse transmitting mechanism, a finger wheel for setting said mechanism, said nger wheel being returnable to normal independently of said mechanism and during the operation thereof. j

3. In a calling device an electrical impulse transmitting mechanism, a rotatable finger wheel for setting said mechanism,

YORK, ASSIGNOR TO WESTERN ELEC'- 9 thereon. l serves as the casing .I 'by said Wheel being independently returnable to normal after the setting of said mechanism and during the period of operation thereof, means for locking said finger Wheel in its normal position, and means for releasing vsaid finger Wheel When said transmitting mechanism is in its normal position.

4. In a calling device, an electrical impulse .transmitting mechanism, said mechanism having a predetermined speed of operation, a finger Wheel for setting said mechanism for operation, said finger Wheel being returnable to its normal position at a greater speed than said mechanism and during the operation thereof, means for locking said finger Wheel in its normal position, and means for releasing said finger Wheel when said mechanism has returned to its normal position.

5. A calling device comprising an electrical impulse sending mechanism, a revertable finger Wheel engaging sai d mechanism to set it for operation, said finger wheel capable of being disengaged from said mechanism and returned to normal in advance of and during the operation of said mechanism, and means engaging said finger Wheel to prevent its reengagement with said mechanism until said mechanism returns to normal.A

6. A calling device, comprising a casing,

an electrical impulse sending mechanism, a revertable finger Wheel engaging said mechanism to set it for operation, said finger Wheel capable of being disengaged from said mechanism and returned to normal during the operation thereof, a dog pivotallv supported on said casing for locking said finger Wheel in its normal position, and means on said mechanism cooperating with said dog to release said Wheel when said mechanism is in its normal position.

n Witness whereof, I hereunto subscribe my name this 9th day of December, A. D., 1920.

CHARLES D. RICHARD.' 

